Thomas j



(No Model.)

T. J. BRADBEER.

CHIMNEY GOWL.

No. 350,800. Patented Oct. 12. 1886.

THOMAS J. BRADBEER, OF DETROIT,

PATENT OFFICE.

MICHIGAN, ASSIGNOR TO PUTNAM &

\VINEMAN, OF SAME PLACE.

CHlMNEY-COWL.

SPECIFICATION forming part of Letters Patent No. 350,800, dated October 12,1886. Application filed February 18, 1936. Serial No. 102,424. (No model.)

To all whom it may concern.-

Be it known that I, THOMAS J. BRADBEER, of Detroit, county of \Vayne, and State of Michigan, have invented a new and useful Improvement in t' himney-Cowls; and I declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it pertains to make and use the same, reference being had to the accompanying drawings, which form a part of this specification.

My invention has for its object a chimney cowl or ventilator, and the same is designed more especially to throw the circulation to the outside of the base-section or pipe, and to permit a ready turning aside of any rain or snow, so as to prevent effectually their being permitted to descend the chimney-flue.

My invention therefore consists in the combinations of devices and appliances hereinafl ter specified, and more particularly pointed out in the claims.

' I11 the drawings, Figure l is a vertical sec tion of a device embodying my invention. Fig. 2 is a side elevation.

I carry out my invention as follows: A represents the base-section of the ventilator, whereby the same is engaged upon the chimney or pipe or whatever it may be applied to. (6 represents a frustum secured upon said pipe at its upper end and provided with drainageopenings (4. B represents any suitable framework engaged upon said pipe and arranged to support the additional features combined in my ventilator. 0 represents an outside frustum engaged upon said framework, and preferably provided with an ornamental top, the base of said frustum extended downward over the frustum a. D represents the top frustum, supported, also, upon said framework, with its smaller end uppermost, its lower end being located within the top of the outer frustum, which latter frustum is located with its larger end uppermost, as shown. E represents an inside t'rustum, also supported upon said framework, and provided with an orifice at its lower end communicating with a drainagechannel, a, which channel is extended so as to discharge outside the periphery of the frustum a. This inside frustum is located with its smaller end downward, as shown, and below the opening of the top frustum.

The upper diameter of the inside frustum is preferably made of such dimensions as to leave between the upper circumference of said frustum and the inner periphery of the adjacent top frustum a capacity equal to the full capacity of the base section or pipe A. By such a construction and arrangementvery little obstruction is afforded to the circulation when there is butlittle wind, andleaving very nearly a straightway course for the draft through said base-section, up about the inner frustum, and through the top frustum. It is evident that this construction throws all the draft to the outside of the cowl. The lower frustum, a, tends to force the draft away from the interior and toward the inner periphery of the outside frustum, O, and to dischargethe draft upward between the top of said frustum and the top frustum.

The construction and arrangement of the Various parts shown tend to spread the currents of air and to throw the rain or snow to the outside and to prevent their entering the base-section A. The outer fl'llStlllJl and its ornamental top may be conveniently made in a single piece, and the supporting framework may be of any proper form.

It is noticeable that the parts 0 and E are inverted frustums.

\Vhat I claim is- 1. In a chimney cowl or ventilator, the con1- bination, with thebase-section, of the lower frustum, a. provided with discharge-openings, a supporting-frame and outer frustum supported on said frame with its smaller end downward, a top frustum supported on said frame with its smaller end uppermost and its lower end supported by brackets within the top of the outer frusturn, and an inner frustum supported upon said frame with its smaller end downward, said lower end provided with a discharge-opening and a discharge-channel communicating therewith, all arranged substantially as and in the manner described.

2. The combination, with the lower section, of a supporting frame-work, an inner inverted frusturn, E, located above the center of said lower section, provided with a discharge-open ICO ing and a disehargeehztnnel communicating low and about the top of the baseseetion, subto therewith, a top frustum engaged upon said stantiallyas and in the manner described. frame and extended above said-inner frustum, In testimony whereof Isign this speeificatio and lesta ving a space between it and the outer in the presence of two witnesses.

5 edgeo the frustum E nearl or quite equivzv lent to the full capacity of {he lower section, rlHOMAS BR'ADBEER' and an exterior inverted frustum provided Witnesses; with a discharge-opening outside the base of N. S. WVRIGHT, the top frustum and extended downward be- 0. S. MCDONALD. 

